我的整个日志。我对命令提示相当新鲜，我完全按照laravel文档要求我做，但问题只是从没有地方突然出现....我的目录是否正确？我通常在项目目录中运行所有命令，但laravel要求我“确保将〜/ .composer / vendor / bin目录放在PATH中，以便在终端中运行homestead命令时找到homestead可执行文件。”请帮忙。
~\Composer\vendor\bin>composer global require "laravel/homestead=~2.0"
Changed current directory to ~/Roaming/Composer
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Conclusion: don't install laravel/homestead v2.2.1
- Conclusion: don't install laravel/homestead v2.2.0
- Conclusion: don't install laravel/homestead v2.1.8
- Conclusion: don't install laravel/homestead v2.1.7
- Conclusion: don't install laravel/homestead v2.1.6
- Conclusion: don't install laravel/homestead v2.1.5
- Conclusion: don't install laravel/homestead v2.1.4
- Conclusion: don't install laravel/homestead v2.1.3
- Conclusion: don't install laravel/homestead v2.1.2
- Conclusion: don't install laravel/homestead v2.1.1
- Conclusion: don't install laravel/homestead v2.1.0
- Conclusion: don't install laravel/homestead v2.0.17
- Conclusion: don't install laravel/homestead v2.0.16
- Conclusion: don't install laravel/homestead v2.0.15
- Conclusion: don't install laravel/homestead v2.0.14
- Conclusion: don't install laravel/homestead v2.0.13
- Conclusion: don't install laravel/homestead v2.0.12
- Conclusion: don't install laravel/homestead v2.0.11
- Conclusion: don't install laravel/homestead v2.0.10
- Conclusion: don't install laravel/homestead v2.0.9
- Conclusion: don't install laravel/homestead v2.0.8
- Conclusion: don't install laravel/homestead v2.0.7
- Conclusion: don't install laravel/homestead v2.0.6
- Conclusion: don't install laravel/homestead v2.0.5
- Conclusion: don't install laravel/homestead v2.0.4
- Conclusion: don't install laravel/homestead v2.0.3
- Conclusion: don't install laravel/homestead v2.0.2
- Conclusion: don't install laravel/homestead v2.0.1
- Conclusion: remove symfony/console v3.1.0
- Installation request for laravel/homestead ~2.0 -> satisfiable by laravel/homestead[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.12, v2.0.13, v2.0.14, v2.0.15, v2.0.16, v2.0.17, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9, v2.1.0, v2.1.1, v2.1.2, v2.1.3, v2.1.4, v2.1.5, v2.1.6, v2.1.7, v2.1.8, v2.2.0, v2.2.1].
- Conclusion: don't install symfony/console v3.1.0
- laravel/homestead v2.0.0 requires symfony/console ~2.0 -> satisfiable by symfony/console[2.0.4, 2.0.5, 2.0.6, 2.0.7, v2.0.10, v2.0.12, v2.0.13, v2.0.14, v2.0.15, v2.0.16, v2.0.17, v2.0.18, v2.0.19, v2.0.20, v2.0.21, v2.0.22, v2.0.23, v2.0.24, v2.0.25, v2.0.9, v2.1.0, v2.1.1, v2.1.10, v2.1.11, v2.1.12, v2.1.13, v2.1.2, v2.1.3, v2.1.4, v2.1.5, v2.1.6, v2.1.7, v2.1.8, v2.1.9, v2.2.0, v2.2.1, v2.2.10, v2.2.11, v2.2.2, v2.2.3, v2.2.4, v2.2.5, v2.2.6, v2.2.7, v2.2.8, v2.2.9, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.2, v2.7.3, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.1, v2.8.2, v2.8.3, v2.8.4, v2.8.5, v2.8.6].
- Can only install one of: symfony/console[v2.3.0, v3.1.0].
- Can only install one of: symfony/console[v2.3.1, v3.1.0].
- Can only install one of: symfony/console[v2.3.10, v3.1.0].
- Can only install one of: symfony/console[v2.3.11, v3.1.0].
- Can only install one of: symfony/console[v2.3.12, v3.1.0].
- Can only install one of: symfony/console[v2.3.13, v3.1.0].
- Can only install one of: symfony/console[v2.3.14, v3.1.0].
- Can only install one of: symfony/console[v2.3.15, v3.1.0].
- Can only install one of: symfony/console[v2.3.16, v3.1.0].
- Can only install one of: symfony/console[v2.3.17, v3.1.0].
- Can only install one of: symfony/console[v2.3.18, v3.1.0].
- Can only install one of: symfony/console[v2.3.19, v3.1.0].
- Can only install one of: symfony/console[v2.3.2, v3.1.0].
- Can only install one of: symfony/console[v2.3.20, v3.1.0].
- Can only install one of: symfony/console[v2.3.21, v3.1.0].
- Can only install one of: symfony/console[v2.3.22, v3.1.0].
- Can only install one of: symfony/console[v2.3.23, v3.1.0].
- Can only install one of: symfony/console[v2.3.24, v3.1.0].
- Can only install one of: symfony/console[v2.3.25, v3.1.0].
- Can only install one of: symfony/console[v2.3.26, v3.1.0].
- Can only install one of: symfony/console[v2.3.27, v3.1.0].
- Can only install one of: symfony/console[v2.3.28, v3.1.0].
- Can only install one of: symfony/console[v2.3.29, v3.1.0].
- Can only install one of: symfony/console[v2.3.3, v3.1.0].
- Can only install one of: symfony/console[v2.3.30, v3.1.0].
- Can only install one of: symfony/console[v2.3.31, v3.1.0].
- Can only install one of: symfony/console[v2.3.32, v3.1.0].
- Can only install one of: symfony/console[v2.3.33, v3.1.0].
- Can only install one of: symfony/console[v2.3.34, v3.1.0].
- Can only install one of: symfony/console[v2.3.35, v3.1.0].
- Can only install one of: symfony/console[v2.3.36, v3.1.0].
- Can only install one of: symfony/console[v2.3.37, v3.1.0].
- Can only install one of: symfony/console[v2.3.38, v3.1.0].
- Can only install one of: symfony/console[v2.3.39, v3.1.0].
- Can only install one of: symfony/console[v2.3.4, v3.1.0].
- Can only install one of: symfony/console[v2.3.40, v3.1.0].
- Can only install one of: symfony/console[v2.3.41, v3.1.0].
- Can only install one of: symfony/console[v2.3.42, v3.1.0].
- Can only install one of: symfony/console[v2.3.5, v3.1.0].
- Can only install one of: symfony/console[v2.3.6, v3.1.0].
- Can only install one of: symfony/console[v2.3.7, v3.1.0].
- Can only install one of: symfony/console[v2.3.8, v3.1.0].
- Can only install one of: symfony/console[v2.3.9, v3.1.0].
- Can only install one of: symfony/console[v2.4.0, v3.1.0].
- Can only install one of: symfony/console[v2.4.1, v3.1.0].
- Can only install one of: symfony/console[v2.4.10, v3.1.0].
- Can only install one of: symfony/console[v2.4.2, v3.1.0].
- Can only install one of: symfony/console[v2.4.3, v3.1.0].
- Can only install one of: symfony/console[v2.4.4, v3.1.0].
- Can only install one of: symfony/console[v2.4.5, v3.1.0].
- Can only install one of: symfony/console[v2.4.6, v3.1.0].
- Can only install one of: symfony/console[v2.4.7, v3.1.0].
- Can only install one of: symfony/console[v2.4.8, v3.1.0].
- Can only install one of: symfony/console[v2.4.9, v3.1.0].
- Can only install one of: symfony/console[v2.5.0, v3.1.0].
- Can only install one of: symfony/console[v2.5.1, v3.1.0].
- Can only install one of: symfony/console[v2.5.10, v3.1.0].
- Can only install one of: symfony/console[v2.5.11, v3.1.0].
- Can only install one of: symfony/console[v2.5.12, v3.1.0].
- Can only install one of: symfony/console[v2.5.2, v3.1.0].
- Can only install one of: symfony/console[v2.5.3, v3.1.0].
- Can only install one of: symfony/console[v2.5.4, v3.1.0].
- Can only install one of: symfony/console[v2.5.5, v3.1.0].
- Can only install one of: symfony/console[v2.5.6, v3.1.0].
- Can only install one of: symfony/console[v2.5.7, v3.1.0].
- Can only install one of: symfony/console[v2.5.8, v3.1.0].
- Can only install one of: symfony/console[v2.5.9, v3.1.0].
- Can only install one of: symfony/console[v2.6.0, v3.1.0].
- Can only install one of: symfony/console[v2.6.1, v3.1.0].
- Can only install one of: symfony/console[v2.6.10, v3.1.0].
- Can only install one of: symfony/console[v2.6.11, v3.1.0].
- Can only install one of: symfony/console[v2.6.12, v3.1.0].
- Can only install one of: symfony/console[v2.6.13, v3.1.0].
- Can only install one of: symfony/console[v2.6.2, v3.1.0].
- Can only install one of: symfony/console[v2.6.3, v3.1.0].
- Can only install one of: symfony/console[v2.6.4, v3.1.0].
- Can only install one of: symfony/console[v2.6.5, v3.1.0].
- Can only install one of: symfony/console[v2.6.6, v3.1.0].
- Can only install one of: symfony/console[v2.6.7, v3.1.0].
- Can only install one of: symfony/console[v2.6.8, v3.1.0].
- Can only install one of: symfony/console[v2.6.9, v3.1.0].
- Can only install one of: symfony/console[v2.7.0, v3.1.0].
- Can only install one of: symfony/console[v2.7.1, v3.1.0].
- Can only install one of: symfony/console[v2.7.10, v3.1.0].
- Can only install one of: symfony/console[v2.7.11, v3.1.0].
- Can only install one of: symfony/console[v2.7.12, v3.1.0].
- Can only install one of: symfony/console[v2.7.13, v3.1.0].
- Can only install one of: symfony/console[v2.7.2, v3.1.0].
- Can only install one of: symfony/console[v2.7.3, v3.1.0].
- Can only install one of: symfony/console[v2.7.4, v3.1.0].
- Can only install one of: symfony/console[v2.7.5, v3.1.0].
- Can only install one of: symfony/console[v2.7.6, v3.1.0].
- Can only install one of: symfony/console[v2.7.7, v3.1.0].
- Can only install one of: symfony/console[v2.7.8, v3.1.0].
- Can only install one of: symfony/console[v2.7.9, v3.1.0].
- Can only install one of: symfony/console[v2.8.0, v3.1.0].
- Can only install one of: symfony/console[v2.8.1, v3.1.0].
- Can only install one of: symfony/console[v2.8.2, v3.1.0].
- Can only install one of: symfony/console[v2.8.3, v3.1.0].
- Can only install one of: symfony/console[v2.8.4, v3.1.0].
- Can only install one of: symfony/console[v2.8.5, v3.1.0].
- Can only install one of: symfony/console[v2.8.6, v3.1.0].
- Can only install one of: symfony/console[2.0.4, v3.1.0].
- Can only install one of: symfony/console[2.0.5, v3.1.0].
- Can only install one of: symfony/console[2.0.6, v3.1.0].
- Can only install one of: symfony/console[2.0.7, v3.1.0].
- Can only install one of: symfony/console[v2.0.10, v3.1.0].
- Can only install one of: symfony/console[v2.0.12, v3.1.0].
- Can only install one of: symfony/console[v2.0.13, v3.1.0].
- Can only install one of: symfony/console[v2.0.14, v3.1.0].
- Can only install one of: symfony/console[v2.0.15, v3.1.0].
- Can only install one of: symfony/console[v2.0.16, v3.1.0].
- Can only install one of: symfony/console[v2.0.17, v3.1.0].
- Can only install one of: symfony/console[v2.0.18, v3.1.0].
- Can only install one of: symfony/console[v2.0.19, v3.1.0].
- Can only install one of: symfony/console[v2.0.20, v3.1.0].
- Can only install one of: symfony/console[v2.0.21, v3.1.0].
- Can only install one of: symfony/console[v2.0.22, v3.1.0].
- Can only install one of: symfony/console[v2.0.23, v3.1.0].
- Can only install one of: symfony/console[v2.0.24, v3.1.0].
- Can only install one of: symfony/console[v2.0.25, v3.1.0].
- Can only install one of: symfony/console[v2.0.9, v3.1.0].
- Can only install one of: symfony/console[v2.1.0, v3.1.0].
- Can only install one of: symfony/console[v2.1.1, v3.1.0].
- Can only install one of: symfony/console[v2.1.10, v3.1.0].
- Can only install one of: symfony/console[v2.1.11, v3.1.0].
- Can only install one of: symfony/console[v2.1.12, v3.1.0].
- Can only install one of: symfony/console[v2.1.13, v3.1.0].
- Can only install one of: symfony/console[v2.1.2, v3.1.0].
- Can only install one of: symfony/console[v2.1.3, v3.1.0].
- Can only install one of: symfony/console[v2.1.4, v3.1.0].
- Can only install one of: symfony/console[v2.1.5, v3.1.0].
- Can only install one of: symfony/console[v2.1.6, v3.1.0].
- Can only install one of: symfony/console[v2.1.7, v3.1.0].
- Can only install one of: symfony/console[v2.1.8, v3.1.0].
- Can only install one of: symfony/console[v2.1.9, v3.1.0].
- Can only install one of: symfony/console[v2.2.0, v3.1.0].
- Can only install one of: symfony/console[v2.2.1, v3.1.0].
- Can only install one of: symfony/console[v2.2.10, v3.1.0].
- Can only install one of: symfony/console[v2.2.11, v3.1.0].
- Can only install one of: symfony/console[v2.2.2, v3.1.0].
- Can only install one of: symfony/console[v2.2.3, v3.1.0].
- Can only install one of: symfony/console[v2.2.4, v3.1.0].
- Can only install one of: symfony/console[v2.2.5, v3.1.0].
- Can only install one of: symfony/console[v2.2.6, v3.1.0].
- Can only install one of: symfony/console[v2.2.7, v3.1.0].
- Can only install one of: symfony/console[v2.2.8, v3.1.0].
- Can only install one of: symfony/console[v2.2.9, v3.1.0].
- Installation request for symfony/console (locked at v3.1.0) -> satisfiable by symfony/console[v3.1.0].
Installation failed, reverting ./composer.json to its original content.
从我的项目目录输入作曲家，我得到：
Composer version 1.1.1 2016-05-17 12:25:44
Usage:
command [options] [arguments]
Options:
-h, --help Display this help message
-q, --quiet Do not output any message
-V, --version Display this application version
--ansi Force ANSI output
--no-ansi Disable ANSI output
-n, --no-interaction Do not ask any interactive question
--profile Display timing and memory usage information
--no-plugins Whether to disable plugins.
-d, --working-dir=WORKING-DIR If specified, use the given directory as working directory.
-v|vv|vvv, --verbose Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
Available commands:
about Short information about Composer
archive Create an archive of this composer package
browse Opens the package's repository URL or homepage in your browser.
clear-cache Clears composer's internal package cache.
clearcache Clears composer's internal package cache.
config Set config options
create-project Create new project from a package into given directory.
depends Shows which packages cause the given package to be installed
diagnose Diagnoses the system to identify common errors.
dump-autoload Dumps the autoloader
dumpautoload Dumps the autoloader
exec Execute a vendored binary/script
global Allows running commands in the global composer dir ($COMPOSER_HOME).
help Displays help for a command
home Opens the package's repository URL or homepage in your browser.
info Show information about packages
init Creates a basic composer.json file in current directory.
install Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.
licenses Show information about licenses of dependencies
list Lists commands
outdated Shows a list of installed packages that have updates available, including their latest version.
prohibits Shows which packages prevent the given package from being installed
remove Removes a package from the require or require-dev
require Adds required packages to your composer.json and installs them
run-script Run the scripts defined in composer.json.
search Search for packages
self-update Updates composer.phar to the latest version.
selfupdate Updates composer.phar to the latest version.
show Show information about packages
status Show a list of locally modified packages
suggests Show package suggestions
update Updates your dependencies to the latest version according to composer.json, and updates the composer.lock file.
validate Validates a composer.json and composer.lock
why Shows which packages cause the given package to be installed
why-not Shows which packages prevent the given package from being installed
答案 0 :(得分：2)
似乎laravel / homestead的symfony / console依赖项与当前安装的symfony / console（最有可能作为另一个包的依赖项安装）发生冲突。
Doom5
只要程序包导致冲突，您就无法安装它 - 您需要先解决这些要求。 require - 命令不会自动执行此操作。这是一个解决方法，至少对我有用：
<强> 1。将失败的包添加到composer.json：
这也可以手工完成，但是作曲家已经使用--no-update选项为我们做了这个，＆＃34;禁用依赖项的自动更新＆＃34; （即，将包添加到composer.json，但不要安装它：）
composer global require "laravel/homestead=~2.0" --no-update
<强> 2。重新安装受影响的软件包：
现在"laravel/homestead": "~2.0"已composer.json，我们可以解析依赖关系，并将其安装到~/.composer/vendor。
composer global update
要仅更新导致冲突的软件包，可以使用prohibits和depends命令获取阻止给定软件包的软件包。
另一种解决方案是直接要求依赖项。但是，这不会真正解决问题......
composer global require "laravel/homestead=~2.0" "symfony/console=~2.0"